Refereeing at the 2014 World Cup will be radically altered with the possible introduction of goal-line technology and the use of extra officials, a top FIFA executive said.

Refereeing at the 2014 World Cup will be radically altered with the possible introduction of goal-line technology and the use of extra officials, a top FIFA executive said.

FIFA have come under increasing pressure to introduce technology and video replays after a series of howlers at the World Cup.

England's Frank Lampard had a perfectly good goal ruled out against Germany when the referee and his assistant failed to spot the ball had landed behind the line after coming off the crossbar.

Mexico were also furious when Carlos Tevez's goal for Argentina was allowed to stand despite the striker being in an offside position.

FIFA general secretary Jerome Valcke said the Lampard incident had been a "bad day" for organisers.

"We're talking about a goal not seen by the referee which is why we are talking about new technology," Valcke told the BBC.

He also suggested that the use of two extra referees positioned on the goal-line - a system trialled last season in the Europa League and set to be used in the Champions League this coming season - might also be used in future World Cups.

"But let's see if this system will help or whether giving the referee an additional four eyes will give him the comfort and make duty easier to perform, then why not?," said Valcke.

In March this year, the International Football Association Board (IFAB) decided against introducing goal-line technology despite the widespread outrage following Thierry Henry's handball which helped France beat Ireland in a World Cup play-off.

But Valcke admitted that the fast and furious pace of the modern game is posing new problems for FIFA.

"The teams and the players are so strong and so fast. The game is different and the referees are older than all the players," said Valcke.

"The game is so fast, the ball is flying so quickly, we have to help them and we have to do something and that's why I say it is the last World Cup under the current system."